带有Python示例的math.atan2()方法
Pythonmath.atan2()方法
math.atan2()方法是数学模块的库方法，用于获取“y/x”的反正切值（即atan（y/x）），它接受两个数字并返回“y”的反正切/x”。
注：math.atan2()方法接受的唯一的号码，如果我们提供任何其他除外数量，则返回错误类型错误-“类型错误：需要浮动”。
math.atan2()方法的语法：
math.atan2(y, x)
Parameter(s)：y，x–是要计算其反正切值的数字（即atan（y/x））。
返回值：float-返回一个浮点值，该值是数字y/x的反正切值。
示例
Input:
y = 0.2345
x = 1.234
#函数调用
print(math.atan2(y, x))
Output:
0.18779323183177443Python代码演示math.atan2()方法的示例
#python代码演示示例
#math.atan2()方法
#导入数学模块
import math
#数字
x = -1
y = 1
print("atan2(",x,",",y,") is = ", math.atan2(x,y))
x = 0.2345
y = 1.234
print("atan2(",x,",",y,") is = ", math.atan2(x,y))
x = -5
y = 5
print("atan2(",x,",",y,") is = ", math.atan2(x,y))
x = 10
y = 20.23
print("atan2(",x,",",y,") is = ", math.atan2(x,y))输出结果
atan2( -1 , 1 ) is = -0.7853981633974483 atan2( 0.2345 , 1.234 ) is = 0.18779323183177443 atan2( -5 , 5 ) is = -0.7853981633974483 atan2( 10 , 20.23 ) is = 0.45908957477179374
TypeError示例
#python代码演示示例
#math.atan2()方法 with an exception
#导入数学模块
import math
#数字
x = "2"
y = "34"
print("atan2(",x,",",y,") is = ", math.atan2(x,y))输出结果
Traceback (most recent call last):
File "/home/main.py", line 10, in <module>
print("atan2(",x,",",y,") is = ", math.atan2(x,y))
TypeError: a float is required